isoflavone

noun

iso·​fla·​vone ˌī-sō-ˈflā-ˌvōn 

: a colorless, crystalline, bioactive ketone C₁₅H₁₀O₂

also : any of various usually hydroxyl derivatives of isoflavone (such as genistein and daidzein) that are plant compounds possessing antioxidant and estrogenic activity in the body

Examples of isoflavone in a Sentence

Recent Examples on the Web

Some research suggests that isoflavones may help your body respond better to insulin, the hormone that moves sugar from your bloodstream into your cells for energy. — Brianna Tobritzhofer, HEALTH, 3 Aug. 2026

In addition to plant protein, tofu provides antioxidants called isoflavones. — Cynthia Sass, Health, 22 July 2026

Lorenz adds that soy foods like edamame also contribute calcium and beneficial plant compounds called isoflavones. — Lynn Andriani, Martha Stewart, 18 July 2026

Fiber, potassium, magnesium, and isoflavones in legumes and soy may help lower blood pressure. — Stephanie Brown, Verywell Health, 28 May 2026

Word History

First Known Use

1926, in the meaning defined above

Medical Definition

isoflavone

noun

iso·​fla·​vone -ˈflā-ˌvōn 

: a bioactive ketone C₁₅H₁₀O₂ noted for its numerous derivatives that are found in plants (as the soybean) and have antioxidant and estrogenic activity

also : any of these derivatives (as daidzein or genistein)